I found a Sportster engine for sale. What are the first things I should check or replace?

When starting with a used engine of unknown history, it's wise to at least perform a top-end refresh. This typically includes new gaskets, checking cylinder and piston tolerances, and inspecting the valve train. This gives you peace of mind and a reliable starting point.

What are the easiest ways to get more power from my stock Sportster engine?

The most common and effective "Stage 1" upgrades are improving airflow. This means installing a high-flow air cleaner and a less restrictive exhaust system. These two changes allow the engine to breathe more freely and will deliver a noticeable performance gain without ever opening up the motor itself.

I'm rebuilding my engine. How important is it to replace all the hardware?

While not always strictly necessary, it's highly recommended. Engine hardware is subject to countless heat cycles and stress, which can cause it to stretch and weaken over time. Using new, high-quality head bolts, case bolts, and other hardware ensures proper torque specs and a leak-free, reliable engine for years to come.

Engine Mounts Raw Motorcycle Engine

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Lowbrow Customs Complete Solid Motor Mount Kit for 2004 - Up Harley-Davidson Sportster XL
21 reviews $141.95

Cycle Standard Complete Front Rubber Motor Mount Kit 2004-Up Harley-Davidson Sportsters
$178.42

Gasbox Top Motor Mount - 1957 - 1985 Ironhead Sportster XL - With Coil And Crank Key Start Mount
20 reviews $49.95

Gasbox Strong Arm Top Motor Mount With Crank Key Mount 1948-1984 Harley Big Twins
5 reviews $74.95

Gasbox Strong Arm Top Motor Mount With Coil Mount 1948-84 Harley Big Twins
5 reviews $74.95

Gasbox Strong Arm Top Motor Mount with Coil Mount - 1984-1999 Harley-Davidson Big Twin Evolution
$74.95

Gasbox Strong Arm Top Motor Mount for Crank Start Key Switch - 1984-1999 Harley-Davidson Big Twin Evolution
$74.95

Gasbox Top Motor Mount - 1986-2003 Sportster - With Coil and Stock Ignition Switch Mounts
6 reviews $49.95

Gasbox Front Motor Plates For Use With Forward Controls Harley-Davidson Sportsters
1 review $61.36

Gasbox Strong Arm Top Motor Mount 1948-84 Harley Big Twins
5 reviews $69.95

Gasbox Strong Arm Top Engine Mount For Early Big Twin Engines In Gasbox Frames
$74.95

Gasbox Front Motor Mount Plates - Stainless Steel - 1957 - 1981 Ironhead Sportster
8 reviews $49.95

Cycle Standard Complete Rear Rubber Motor Mount Kit 2004-13 Harley-Davidson Sportsters
$152.44

Lowbrow Customs Front Solid Motor Mount Kit for 2004 - Up Harley-Davidson Sportster XL
4 reviews $72.06

Gasbox Top Motor Mount - 1986-2003 Sportster - With Ignition Coil Relocation
6 reviews $39.95

Cycle Standard Isolator Motor Mount - Rear - 1991-1998 Harley-Davidson Dyna
$101.61

Cycle Standard Isolator Mount - Front - 2004-2021 Harley-Davidson Sportster XL
1 review $25.00

Cycle Standard Swingarm Isolator Mount 1987-2008 Harley-Davidson FLT 87-94 FXR
1 review $25.05

Gasbox Strong Arm Top Motor Mount With OEM 71425-77 Ignition Switch Mount 1948-84 Harley Big Twins
1 review $74.95

Cycle Standard Rear Motor Engine Mount 1967-1981 Harley Davidson Ironhead Sportster OEM 16203-67
4 reviews $90.97

Gasbox Front Motor Mount Spacer Plate Harley-Davidson Knucklehead Panhead UL OEM 438-48 24795-48
5 reviews $15.00

Gasbox Strong Arm Top Motor Mount - 1984-1999 Harley-Davidson Big Twin Evolution
$74.95

Cycle Standard Isolator Motor Mount - Front - 1991-2017 Harley-Davidson Dyna
3 reviews $108.56

Cycle Standard Isolator Motor Mount - Rear - 1999-2017 Harley-Davidson Dyna
1 review $125.41

Cycle Standard Isolator Mount - Rear - 2004-2021 Harley-Davidson Sportster XL
1 review $24.96

Cycle Standard Front Motor Mount 1982-94 Harley-Davidson FXR 80-08 FLH FLT
$31.61

Cycle Standard Complete Rear Rubber Motor Mount Kit 2014-Up Harley-Davidson Sportsters
$151.83

British Standard Engine and Transmission Lock Tab Set - 1963 - 1972 Triumph 650 with 4 Speed Gearbox
14 reviews $20.86

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